Finding the Fourth Proportional to 42,155.29, 63,264.12 and 19,968.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,155.29 : 63,264.12 = 19,968.72 : x
2. Step 2: Convert to fraction form
   42,155.29/63,264.12 = 19,968.72/x
3. Step 3: Cross multiply
   42,155.29x = 63,264.12 × 19,968.72
4. Step 4: Simplify right side
   42,155.29x = 1,263,303,498.33
5. Step 5: Solve for x
   x = 1,263,303,498.33/42,155.29
6. Step 6: Final answer
   x = 29,967.85